Kernel for BKF, file repair and file recovery software for corrupt and damaged .BKF files created with Windows backup utility. MS backup recovery software scans the inaccessible .BKF file and recovers files and folders which exist in the file. Generally, the BKF archive files become corrupt or inaccessible due to virus contaminations, disk failures, long period of inactivity etc., here Kernel for BKF performs successfully to repair the corrupt backup file and retrieve files and folders from it. BKF file created on any Windows operating system can be repaired with Kernel for BKF successfully. Software is available as free evaluation to its users who can download the software for free and evaluate in their case of corruptions. Works smoothly with Windows Vista, XP, 2003, 2002, 2000, 98, and 97.